What does the Volkswagen engine label SG15W 40 mean

It is the model of the engine oil, and the nature of the oil required for different types of cars is also different.

SG has higher purity, high temperature oxidation stability, and wear resistance than SF. It is suitable for all domestic and imported new high-end cars such as BMW, Jaguar, Cadillek, Lexus, Lincoln and other high-end cars with more than six cylinders, and can meet the needs of medium-sized buses with various gasoline engines.

15W 40 oil, can be used in the temperature range of -15 -40.

4t is 4-stroke (stroke).

Regarding strokes, you come here to take a look.

Hello, this is a normal mineral oil, and it is a very poor mineral oil. The level is low. S stands for the oil of the gasoline engine, and the further back the S is familiar, the higher the level.

This kind of oil grade is too low, and today's cars generally need to change the oil of SJ or above.

Not very good S is on behalf of gasoline car oil G stands for engine oil number, oil number An, English letters are ranked farther back, the better the engine oil.

Hello, this oil grade is too low.

Hello, 10W-40 is its SAE standard viscosity value, this viscosity value first indicates that this oil is a re-graded lubricating oil (there is basically no single-stage lubricating oil in the civil field), W stands for Winter winter, and the number in front of W represents the pour point temperature, which is simply the freezing point temperature. The corresponding freezing point temperature of 10W oil is -25, other common 0W is -35, 5W is -30, and 15W is -20. The number after w represents the kinematic viscosity of the oil at 100, and the higher the value, the higher the viscosity.

SG15W-40 gasoline engine oil, already belongs to the high-end engine oil, he is suitable for a variety of high-end engine use, not to mention the mini car: rest assured to use it!!

SG15W-40"W means Winter, the more ** the number in front of it, the thinner the viscosity of the oil, the better the fluidity, which means that the lower the ambient temperature available for use, the better the protection ability of the engine during cold start; “；The number after "w" (one horizontal back) is an indicator of the high temperature resistance of the engine oil, and the higher the value, the better the protection performance of the engine oil at high temperatures. 15 indicates that the viscosity of the oil is 15 in winter, and 40 indicates the viscosity of the 40 oil in the summer. This means that this oil is advanced"Multi-grade motor oil", suitable for a wide range of areas from low to high temperatures, the viscosity value will change with temperature to give the engine full protection.

The general oil grades in winter and summer are: 15w w w w-50, and this is just part of it!

American Petroleum Institude, abbreviated as 1) American Petroleum Institude, abbreviated

The main sales in the United States can be divided into two categories according to the standard of API automotive oil:The main sales in the United States can be divided into two categories according to the standard of API automotive oil:

One is commercial oil (commerical oil), such as medium and large trucks, buses, engineering vehicles, etc. used engine oil, most of these vehicles use diesel as fuel, so the C word is commercial oil (commerical oil), such as medium and large trucks, buses, engineering vehicles, etc.

head, such as CE, CF-2, CF-4, CG-4, CH-4, CI-4, etc.; The second is the engine oil sold by general gas stations (service stations), which is usually used in cars and is represented by the head, such as CE, CF-2, CF-4, CG-4, CH-4, CI-4, etc.; The second is the engine oil sold at general gas stations (service stations), which is usually used in cars and is.

On small vehicles with gasoline engines (excluding two-stroke locomotives), represented by the S prefix, such as SF, SG, SH, SJ, SL grades (see attached table), the second word is represented by the English ABC gasoline engine small vehicles (excluding two-stroke locomotives), represented by the S prefix, such as SF, SG, SH, SJ, SL grades (see the attached table), and the second word is represented by English ABC

Represents the grade, and the higher the letter grade. Represents the grade, and the higher the letter rank, the higher the grade.

Grade index The grade index of motor oil is usually used internationally by the American Petroleum Institute ( standard. Usually two English letters are used to denote the engine category suitable for the first English letter engine oil, which represents gasoline engine oil and diesel engine oil; The second letter of the English letter represents the grade of engine oil, in alphabetical order, the second letter is arranged to represent the higher the quality, which can provide better protection for the engine, for example, it has higher performance than the engine oil of the same grade. Typically, high-performance sedan applications or grade oils; General domestic models with or grade engine oil.

It is also possible to choose the engine oil according to the age of the engine, which is suitable for mid-to-late gasoline engines; Suitable for gasoline engines of the late decade; Suitable for engines manufactured before the year; Suitable for engines manufactured after years. Viscosity and temperature indicators It is not enough for us to know the grade classification of lubricating oil, and we must also select engine oil by viscosity and temperature indicators. Viscosity index:

The internationally recognized classification is Classification, which is the British abbreviation for the Society of Automotive Engineers. In the classification, it is divided into low temperature viscosity grade to represent winter, the smaller the number, the better the low temperature operation, such as representing the low temperature still maintains good lubricity; represents minus degrees; represents minus degrees; then represents minus degrees; is minus degrees. In addition to the low-temperature viscosity grade, there is also a high-temperature viscosity grade, and the higher the number, the higher the viscosity of the oil.

Usually use a high viscosity oil in hot weather, but use a low viscosity oil with better fluidity in cold weather. In addition, high-end cars or new cars are used with slightly lower viscosity oil with good fluidity due to the precise fitting gap of the parts, but older cars, due to the large wear of the parts clearance, can choose a high-viscosity engine oil with more condensation. The SJ class is higher than the SG class, and it is better to use a lower viscosity in winter, 30 to 40 strong, I hope it will help your car.

I won't ask for anything recommended by the master, it must be highly profitable, and I haven't used either kind of oil. I've heard of the Great Wall before, it's very ordinary. Popular with Shell, Castrol, Mobil.

In terms of level, the SG is too low. SJ SL is good! ~

The SJ is much higher than the SG level, so you're being scammed.

SF is used in gasoline engines for cars or certain trucks, as well as gasoline engines that require the use of API SF, SE, SD and SC grade oils. The oxidation and wear resistance of this oil is better than that of SE, and it also has the ability to control gasoline engine deposits, rust and corrosion, and can replace SE, SD or SC.

SG is used in gasoline engines for cars, vans and light trucks, as well as gasoline engines that require the use of API SG grade oil, and the SG quality also includes the performance of CC (CD). This kind of oil improves the SF grade oil to control the sediment, wear and oil oxidation performance of gasoline engine and diesel engine, has the performance of rust and corrosion, and can replace SE and SF.

SK58206 can be adjusted to SF and SG grade engine oil with API-I and class base oils respectively by adjusting the dosage and adding amount. In addition to meeting the above requirements, it also prevents the poisoning failure of the three-effect conversion device and oxygen sensor, reduces toxic gas emissions, and improves fuel economy.